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        <h1><a href="..\index.html">All files</a> / <a href="index.html">vue_enviorment_code</a> jest.config.js</h1>
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<span class="cline-any cline-neutral">&nbsp;</span></td><td class="text"><pre class="prettyprint lang-js">//  https://vue-test-utils.vuejs.org/zh/installation/#%E7%94%A8-jest-%E6%B5%8B%E8%AF%95%E5%8D%95%E6%96%87%E4%BB%B6%E7%BB%84%E4%BB%B6
&nbsp;
// https://jestjs.io/zh-Hans/docs/configuration
<span class="cstat-no" title="statement not covered" >module.exports = {</span>
    collectCoverage: true,
    collectCoverageFrom: ["**/*.{js,vue}", "!**/node_modules/**"], //测试用例写了部分，如果我们看下覆盖率如何，就需要要配置测试覆盖率。
    moduleFileExtensions: ["js", "vue"], // 告诉 Jest 处理 `*.js *.vue` 文件
    transform: {
        '^.+\\.vue$': '&lt;rootDir&gt;/node_modules/vue-jest', // 用 `vue-jest` 处理 `*.vue` 文件
        '^.+\\.js$': '&lt;rootDir&gt;/node_modules/babel-jest' // 用 `babel-jest` 处理 `*.js` 文件
    },
    moduleNameMapper: {
        '^@/(.*)$': '&lt;rootDir&gt;/src/$1' // 支持源代码中相同的 `@` -&gt; `src` 别名
    },
    snapshotSerializers: [
        'jest-serializer-vue' // 快照的序列化工具
    ],
    //The glob patterns Jest uses to detect test files. By default it looks for .js, .jsx, .ts and .tsx files inside of __tests__ folders,
    // as well as any files with a suffix of .test or .spec (e.g. Component.test.js or Component.spec.js).
    // It will also find files called test.js or spec.js.
    testMatch: ['**/tests/**/*.spec.js'],
    transformIgnorePatterns: ['&lt;rootDir&gt;/node_modules/'] //node_modules默认不转换   
};</pre></td></tr></table></pre>

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